Solaris is a variant of UNIX based originally on BSD but now on system V. The latest release is Solaris 10. It also has a development version currently called Solaris Express or Solaris Nevada.
Installation
Here is the note on how I set up Solaris Nevada on the VAIO VGN-S460 laptop.Some references
http://www.unixguide.net/sun/sunoneliners.shtml/proc/cpuinfo
instead use this to see cpu info
psrinfo -v